Valve mechanism for internal-combustion engines.



J. E. BROWNB.

VALVE MECHANISM FOR INTERNAL COMBUSTION ENGINES.

APPLIUATION FILED AUG. 6, 1913.

Patented May 12, 1914.

2 SHEETS-SHEET l.

@4446 ra /M elk/item J. E. BROWNE. VALVE MECHANISM FOR INTERNAL COMBUSTION ENGINES.

APPLICATION nun AUG.6,1913.

Patented May'12, 1914 2 SHEETS-SHEET 2.

JOHN E. BROWNE, OF ALI-JSTON, MASSACHUSETTS.

VALVE MECHANISM FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented May 12, 1914.

Application filed August 6, 1913. Serial No. 783,276.

To all whom it may concern Be it known that I, JOHN E. BROWNE, a citizen of the United States of America, residing at Allston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Valve Mechanism for Internal-Combustion Engines, of which the following is a specification.

This invention relates to a valve mechanism. for internal combustion engines and has for its object,'the provision of an 1mproved device of this character in which a single valve controls both the intake and the exhaust from three cylinders.

It is a further object of the invention to provide a valve of the type indicated which shall be entirely rotative in its movement in contradistinction to the ordinary puppet type of valve and in which means are provided for permitting expansion or separation of the valve members with relation to each other when the metal, constituting said valves, expands, and conversely for drawing these valve members together when the engine cools.

It it a further object of the invention to limit such latter movement to prevent the valve members from being drawn too far toward each other.

Further objects and advantages of the invention will ,be set forth in the detailed description which now follows.

In the accompanying drawings, Figure 1 isa view partly in side elevation'and partly in section of a part of a six cylinder engine constructed in accordance with the invention, Fig. 2 is a longitudinal sectional view therethrough upon the line of one of the valve members, Fig. 3 is a transverse vertical sectional view, Fig. 4 is a detail sectional view of one of the valves, and Fig. 5 is an underside face view of the valve containing cylinder head.

Like numerals designate corresponding parts in all of the figures of the drawings.

In the drawings, the numerals 5 designate six cylinders arranged in two sets of three cylinders each, each set of cylinders being preferably cast en bloc. The exhaust and intake from all of the cylinders of a set are controlled by the single valve shown in Fig. 4;. These valves comprise intake ends 6 and exhaust ends 7. Each end of the valve is of cuprlike formation, frusto-corrical in form and open at its outer end.

plate 28 covers the chamber 23.

A shaft 8 is secured by head 9 and screws 1 10 t0 the inner face of the exhaust end of the valve. This shaft is preferably angular in cross section so that the intake end is caused to rotate with the shaft whilebeing capable of a limited longitudinal movement with relation thereto. A spring 11 bears between the inner face of the intakeend and a washer 12 mounted upon the shaft 8. A nut 13 is threaded upon the shaft outside of the washer and is held against accidental displacement by a pin 14. Fitted upon the angular shaft is the hub 15 of a worm wheel 16. This hub serves to limit the movement of the intake end 6 of the valve toward the exhaust end 7. Rings 17 are carried by the hub '15, said rings having ways formed therein for the reception of anti-friction balls 18. Rings 19 having ways formed therein receive these balls, said rings and balls providing anti-friction mounting for the valves.

As is best illustrated in Figs. 1, 2 and 3,

the cylinder head consists of a hollow cap 20 divided by a wall 21 into chambers 22 and 23. A central pocket 24 is in communication with chamber 23 and in this pocket, worm wheel 16 is disposed, said pocket serving to receive oil to provide eflicient and constant lubrication of the parts. A worm 25 meshes with worm wheel 16, said worm being mounted upon a shaft 26 driven in any desired manner'from the main shaft of the engine (not show This shaft is preforably provided with ball bearings 27 A cap Chamber 22 constitutes a water, space through which a cooling medium may be circulated fo" the purpose of cooling, the valves and adjacent parts. This water space is in communication with a second water space 29 which extends about the cylinders. Intake and exhaust conduits 30 and 31 extend through chamber 22 and lead from the cylinders to the seats of the valve ends (see Fig. 3). The valve ends each have a pair of ports 32 and 33, by virtue of which construction it is necessary for the valve to turn only one revo-' lution to four revolutions of the crank shaft, the angular displacement of ports 33 with relation to ports 32 being such that the proper timing of the engine is had to permit the operation thereof upon the four-stroke cycle.

Communicating with the open end of the intake end of the valve is an intake manifold 3.4 and communicating with the open end of the exhaust-end of the valve is an exhaust manifold 35. It will be noted that these manifolds are slightly recessed at 36 to permit the desired endwise movement of the valve ends, it being understood that as the metal expands, the valves are permitted the necessary slight outward movement by reason of the yielding mounting of the valve -ends with relation to each other. lVhe nthe metal of the valve contracts, these valves move toward each other, but as before stated, this latter movement is limited by the hub 15 which is interposed between the valve ends.

From the foregoing description, it will be seen that sim )le and eflicient means are herein provided or accomplishing the objects of the invention, but while the elements shown and described are well adapted to serve the purposes for which they are intended, it is to be understood that the invention is not limited to the precise construction set forth,

but includes within its purview such changes as may be made within the scope of the appended claims.

Having described my invention, what I.

claim is:

1. A valve for internal combustion engines, consisting of a pair of hollow, frustoconical members having their smaller ends disposed toward each other, .an angular shaft f xed to one of said members and extending through the other of said members, an enlarged portion ca ried by said shaft, a spring bearing between said enlarged portion'and one of said frusto-conical members, and a driving member mounted upon said shaft, said driving member limiting the movement of said frusto-conical members toward each other.

2. Ina device of the character described, the (")IllblIlfltlOIl with a pa r of hollow, frus" J-COIHCal members, one of which constitutes an intake end and the other of which constitutes an exhaust end and each of which has a pair of ports formed through its side walls in diametrically opposed relation, of a shaft fixed to one of said ends and extendingthrough the other of said ends, a member carried by said shaft, a spring bearing between said memberand the inner face of the end through which said shaft passes, means for causing said last named end to turn with said shaft and a driving member mounted upon said shaft between said ends.

In a device of the character described,

tween said member and the inner face of the end through which said shaft passes, means for causing said last named end to turn with said shaft, a driving member mounted upon said shaft between said ends and anti-friction members disposed between said valve. ends and providing ananti-friction' mounting for said valve. In testimony whereof I aflix my signature m presence of two witnesses.

JOHN E. BROWNE.

Witnesses WILLIAM D. MCALLISTER,

JAMES A. FITZGERALD. v

' topiea of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.? I 

